AAON F1-060, Installation, Operation & Maintenance Manual, Page: 30 / 56

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Permanent type filters may be vacuumed
and/or washed but should not be reinstalled
until thoroughly dry. Most air filters are
marked to indicate the direction of airflow,
and this should be carefully noted when they
are being installed.
The blower and motor bearings are
permanently lubricated and do not require
additional lubrication. It is recommended
that the owner have available at least one set
of replacement fuses of the size supplied
with the original equipment.
Important:
Keep coils, fans and filters
clean.
Service
In the event the unit is not functioning
correctly and a service company is required,
only a company with service technicians
qualified and experienced in both heating
and air conditioning should be permitted to
service the systems in order to keep
warranties in effect. The service tech may
call the sales representative if assistance is
required.
Replacement Parts
Parts for AAON equipment may be obtained
from your local representative. When
ordering parts, reference the unit serial
number and part number.
AAON-Longview Product Support
203 Gum Springs Road
Longview, TX 75602
Ph: 903-236-4403
Fax: 903-236-4463
www.aaon.com
Note: Before calling, technician should have
model and serial number of the unit
available for the service department to help
answer questions regarding the unit.
General
Piping from the condensing unit to the air
handling unit is the responsibility of the
installing contractor.
Use only clean type “ACR” copper tubing
that has been joined with high temperature
brazing alloy.
The pipe sizes must be selected to meet the
actual installation conditions and not simply
based on the connection sizes at the
evaporator and/or condensing unit.
Thermal expansion valve bulbs should be
mounted with good thermal contact on a
horizontal section of the suction line close to
the evaporator, but outside the cabinet, and
well insulated.
Figure 3 - TXV Bulb Position
Hot Gas Reheat
The AAON modulating hot gas reheat
system diverts hot discharge gas from the
condenser to the air handling unit through
the hot gas line.
Field piping between the
condensing unit and the air handling unit
is required.
The line delivers the hot discharge gas to the
reheat coil and/or the hot gas bypass valve,
so it is sized as a discharge line.
Never flip a dirty filter to allow airflow
in the opposite direction.
CAUTION